EP 1228361 A4 20050713 - DIGITAL IMAGE ORIENTATION MARKER
Title (en)
DIGITAL IMAGE ORIENTATION MARKER
Title (de)
DIGITALE BILDORIENTIERUNGSMARKIERUNG
Title (fr)
MARQUEUR D'ORIENTATION D'IMAGE NUMERIQUE
Publication
Application
Priority
- US 0031079 W 20001109
- US 43860699 A 19991112
Abstract (en)
[origin: WO0135085A1] An orientation marker (16) for a digital radiogram (10) formed by a plurality of pixels arrayed along a plurality of rows and columns. The pixels have densities which represent the radiogram optical density at each pixel point, and the densities are represented by digital values. The marker is made by a number of marker pixels arrayed along at least one row and one column of the radiogram. Each of the pixels forming the marker (16), have a marker pixel digital value which has been selected to form an asymmetrical marker pixel pattern on the radiogram, replacing the original radiogram pixel values.
IPC 1-7
IPC 8 full level
A61B 6/00 (2006.01); G01N 23/04 (2006.01); G01T 1/161 (2006.01); H04N 5/232 (2006.01); H04N 5/32 (2006.01)
CPC (source: EP US)
H04N 5/32 (2013.01 - EP US); H04N 23/633 (2023.01 - EP US); G01N 23/04 (2013.01 - EP US)
Citation (search report)
- [XA] EP 0825756 A2 19980225 - KONISHIROKU PHOTO IND [JP]
- [A] US 5077778 A 19911231 - FABIAN CARL E [US]
- See references of WO 0135085A1
Designated contracting state (EPC)
AT BE CH CY DE FR GB IT LI
DOCDB simple family (publication)
WO 0135085 A1 20010517; CA 2390538 A1 20010517; EP 1228361 A1 20020807; EP 1228361 A4 20050713; JP 2003513726 A 20030415; US 6354737 B1 20020312
DOCDB simple family (application)
US 0031079 W 20001109; CA 2390538 A 20001109; EP 00979163 A 20001109; JP 2001536565 A 20001109; US 43860699 A 19991112